Whenever Ryanair is out of the news their CEO Michael O’Leary talks about making passengers stand (to cram more people onto planes) and making them pay to use the lavatory. In the U.S. pay toilets are illegal in many states but those prohibitions wouldn’t apply to airlines since they’d be pre-empted by the federal Airline Deregulation Act.
UK pay toilets are often cleaner than free ones. Would airlines charging for lavatories give us better lavatories? Would they give us bigger lavatories since they’d become a profit center?